843394 has 4 divisors (see below), whose sum is σ = 1265094. Its totient is φ = 421696.

The previous prime is 843383. The next prime is 843397. The reversal of 843394 is 493348.

843394 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 555025 + 288369 = 745^2 + 537^2 .

It is a super-2 number, since 2×843394² = 1422626878472, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (843397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210847 + ... + 210850.

2⁸⁴³³⁹⁴ is an apocalyptic number.

843394 is a deficient number, since it is larger than the sum of its proper divisors (421700).

843394 is a wasteful number, since it uses less digits than its factorization.

843394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421699.

The product of its digits is 10368, while the sum is 31.

The square root of 843394 is about 918.3648512438. The cubic root of 843394 is about 94.4807870387.

The spelling of 843394 in words is "eight hundred forty-three thousand, three hundred ninety-four".